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qaws [65]
3 years ago
11

Which equation represents a line which is parallel to the line y=4x-8y=4x−8?

Mathematics
1 answer:
Mashutka [201]3 years ago
8 0
This line's slope-intercept form is y=4x-8.

The equation that makes it parallel to the line is y=4x+[Any number]
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A supervisor records the repair cost for 14 randomly selected refrigerators. A sample mean of $79.20 and standard deviation of $
Nitella [24]

Answer:

( $74.623, $83.777)

The 90% confidence interval is = ( $74.623, $83.777)

Critical value at 90% confidence = 1.645

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = $79.20

Standard deviation r = $10.41

Number of samples n = 14

Confidence interval = 90%

Using the z table;

The critical value that should be used in constructing the confidence interval.

z(α=0.05) = 1.645

Critical value at 90% confidence z = 1.645

Substituting the values we have;

$79.20+/-1.645($10.42/√14)

$79.20+/-1.645($2.782189528308)

$79.20+/-$4.576701774067

$79.20+/-$4.577

( $74.623, $83.777)

The 90% confidence interval is = ( $74.623, $83.777)

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3 years ago
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Answer:

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Step-by-step explanation:

7 0
3 years ago
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If P = (3, 1) and Q = (-3, -7), find The distance PO​
Monica [59]

Answer:

10 units

Step-by-step explanation:

Given data

P = (3, 1) and Q = (-3, -7)

x1=3

y1=1

x2= -3

y2= -7

The expression for the distance between two coordinate is

d=√((x_2-x_1)²+(y_2-y_1)²)

Substitute

d=√((-3-3)²+(-7-1)²)

d=√((-6)²+(-8)²)

d=√36+64

d=√100

d=10 units

Hence the distance is 10 units

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3 years ago
Chris rode his bike along the same route every day for 60 day. He logged that he had gone exactly 127.8 miles. How many miles di
son4ous [18]
You have to do 127.8 divided by 60 which is 2.13 Chris biked 2.13 miles a day
7 0
3 years ago
Radius of a coin is 3cm then calculate its surface area
dexar [7]
This is your perfect answer

4 0
2 years ago
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